Clutch.



'PATENTF-D NOV. 5, 1907.1

V. J. WAHLSTROMQ CLUTCH. APPLICATION mam APR-6.1902.

UNITED STATES PATENT oEEIoE.

VERNER J. WAHLSTROM, or NEW YORK, N. Y.

CLUTCH.

No. 870,206l- To all whom it may concern:

Be it known that I, VERNER J. WAnLsTno /a citizen of the United States, and resident of New York, in

the county of Kings and State of New York, have invented a new and useful Clutch, of-which the followin'g is a specification. I i

This invention relates to an improvement in clutches,

and it is one of the objects thereof-to provide a 'device of this character which a pulley orother normally loose member may be temporarily secured to. a shaft by the action of a wedging roller and cooperating mem ber.

With this and other objectsin view, the invention consists in certain constructions and combinations" which will be hereinafter fully described and then specifically pointed out in the claims hereunto ap-- pended.

In the accompanying drawings which form a part of this specification and in which likb characters of reference indicate the same parts, Figure 1 is a side elevation of a device constructed in accordance with the invention; Fig. 2 is ab end elevation, partly in section,

of the structure shown in Fig. 1; Fig. 3 is a sectionalv view taken on the line 33 in Fig. 2:; and Fig.1} is a detail view of one of the operating members.

In carrying the invention into effect, there is provided a shaft 1 of any approved form, a ring 2 loosely mounted concentric with the shaft, and a rolleror plurality of rollers 3 interposed between the ring and shaft. When a plurality of rollers are used, they willbe symmetrically arranged between the ring and shaft for the purpose of equalizing the strain. In the best construe-- tions and as shown, two rollers diametrically disposed, are used. The inner periphery of the ring isprovided with a cam surface 4, or when a plurality of rollers are used, with a. plurality of cam surfaces, contacting with the roller or rollers so that when a relative rotary movement of the ring and shaft is set up, thes'cam surfaces will cause the rollers to move inwardly and become wedged between the ring and shaft, thereby efiectin the clutching of the ring to the shaft.

Means are provided for producing the relative rotary movement just referred to and this means may .vary

As shown, they are rigidly connected with a hub 7 interposed between the ring and shaft, the connection being effected by means of aweb 8 which forms a part of a pulley 9. The rollers are positioned and carried -by the hub 7 which is provided with a seriesof pockets Specification of. Letters Patent. I ap lication filed April 6.1907. Serial No. 366,696.

Patented No'v. 5, 1907.

10 extended therethrough, this construction serving to retain the rollers in symmetrical position.

A sleeve 11 may be fastened on the shaft for the I purpose of preventing excessive wear thereotdue to the action of the rollers, the latter being, when the sleeve is used, wedged between the ring and sleeve.

Means are provided for producing a positive reverse movement of the ring and shaft whereby the clutcli is thrown out of action, and thismeans may vary widely inconstruction. In the best constructions and as shown, the ring 2 is provided with studs 12 whichare engaged by cam surfaces 13 formed on rods 14. slidably mounted in the hub 7. beforereierred to.- The cam"s'uri aces' 13 are so arranged'that when the rods aregivena longitudinal movement in one direction, the studs 12 v and consequently the ring 2, willbe rotated against! the stress of the spring plungers 5. When the. rods are moved in the opposite direction, the studs will'be rele'aseil and the 'spring plungers permitted to act .to throw the clutch into action. 1 Means are providedfor simultaneously moving the .rods and this means may vary in construction; In the 4 bestconstructionsandas shown, therods 14 are pro vided with recessedheads 15 engaged .by a collar 'slidablymounted'on the shaft l and having an annular channel 17 formed therein for engagementwith a shit,- able operating yoke, not shown'. I

Changes and variationsmay be made the str fictune by which'the invention is carried 'into effect;- .The invention, therefore, is not to be restricted 'to the precise details of the-structure shown and described'.-

What is claimedis:

. 1. In a clutch, the combination ,with p shaft, of a ring 1 loosely mounted concentric with the-shaft, a roller Intel;- posed between the rlng and shaft, a cam surface'on' the inner periphery of the 'rlng contactlng wlth the roller, 'and' spring actuated means for producing a relative, rotary movement of the ring and shaft, substantially as de scribed. I .V 2.. In a clutch, the combination with& shaft, of a ring loosely mounted concentric with the-shaft, a roller interposed be tween the ring and shaft, a cam surtlace on-the inner periphery of the ring'confacting ;with the roller,

spring actuated means for producing a relative rotary .movement' of the ring and shaft; and means for producing a positive reverse movement, substantially 'as described.

3. In a clutch, the combination witha shaft, of a ring loosely mounted. concentric with the shaft, a'plurality of rollers symmetrically arranged between the ring and shaft,

cam surfaces on the inner periphery of the ring contacting iwith the rollers, and spring actuated means for ppoduclng a relative rotary movement of the ring and shaft, substantially as described.

4. In a clutch, the combination with a shaft, ofja ring loosely mounted concentric with'the shaft, two dlauietrio ally disposed rollers between'the ring and shaft, cam-surfaces on the inner periphery of the rlngcontacting with the rollers, and spring actuated means for producing -arelative rotary movement of the ring and shaft, substantially as. described. I

5.: In a clutch, the combination with a shatfl ot arlng' loosely mounted concentric with the shaft, a plurality of rollers disposed between the ring and shaft, cam surfaces on the inner periphery of the ring contacting with the rollers, spring actuatedmeans for producing a relative rotary movement of the ring and shaft, and means engaging the ring for producing a positive reverse movement, substantially as described.

6. In a clutch, the combination with a shaft, of a ring loosely mounted concentric with the shaft, a plurality of rollers disposed between the ring and shaft, cam surfaces on the inner periphery ,of the ring contacting with the rollers, spring actuated means for producing a relative rotary movement of the ring and shaft. and means including studs fast in the ring and connections for producing a positive reverse movement, substantially as described. 7, In a clutch, the combination with a shaft, of a ring loosely mounted concentric with the shaft, aplurality of rollers disposed between the ring and shaft, cam surfaces on the inner periphery of the ring contacting with the rollers, spring actuated means for producing a rclative'rotary movement, of the ring and shaft, and means including studs fast in the ring and connections mounted to slide in a direction parallel to the axis of the shaft for producing a positive reverse movement, substantially as described.

8 In a clutch, the combination with a shaft, of a ring loosely mounted concentric with the shaft, a plurality of rollers disposed between the ring and shaft, cam faces on the inner periphery of the ring contacting with the rollers, spring actuated means for producing a relative rotary, movement of the ring and shaft, studs fast in the ring, rods having cam faces contacting with the studs and mounted to slide in a direction parallel to the axis of the shaft, and a collar sliding on the shaft and engaging-the rods to move them simultaneously, substantially as do;

scribed. 1 l

9. In a clutch, the combination with a shaft, of a sleeve fast on the shaft, a ring loosely mounted concentric with the shaft, a plurality of rollers disposed between the ring and sleeve, cam surfaces on the inner periphery of the ring contacting with the rollers, and spring actuated means for producing a relative rotary movement of the ring and sleeve, substantially as described.

10.'1n a clutch, the combination with a shaft, ofa sleeve fast on the shaft, a ring looselymounted concentric with the sleeve, a hub disposed between the ring and sleeve, a plurality of rollers carried by the hub, cam sur .faces on 'the inner peripheryof the ring contacting with the rollers, and spring actuated means for producing a relative rotary movement of the ring and sleeve, substantially as described.

11. In a clutch, the combination with a shaft, of -a sleeve fast on the shaft, a ring loosely mounted concentric with the sleeve, a plurality of rollers disposed between the ring and sleeve, cam surfaces on the inner periphery of the ring contacting with the rollers, abutmeuts outside the ring, and means interposed between the ring and abutments for producing a relative rotary movement of-the ring and sleeve, substantially as described.-

12. In a clutch, the combination with a shaft, of a sleeve fast on the shaft, a ring loosely mounted concentric with the sleeve, a plurality of rollers disposed between the ring and sleeve, cam surfaces on the inner periphery of the ring contacting with the rollers, abutments outside the ring, and spring plunge-rs interposed between the ring and abutments for producing a relative rotary movement of the ring and sleeve, substantially as described.

13. In a clutch, the combination with a shaft, of a sleeve fast on the shaft, a ring loosely mounted concentric with the sleeve, aplurality of rollers disposed between the ring and sleeve, cam surfaces on the inner periphery of the ring contacting with the rollers, abutments outside the ring, and spring plungers mounted in the 'ring and bearing against the abutments forproducing a relative rotary movement of the ring and sleeve, substantially as described.

14. In a clutch, the combination with a shaft, of a sleeve fast on the shaft, a, ring loosely mounted concentric with the-sleeve, a plurality of-rollers disposed between the ring and sleeve, cam surfaces on tlYe inner periphery of the ring contacting with the rollers, abutmcnts outside the ring, spring plungers interposed between the ring and abutments l'or producirig a relative rotary movement of reverse movement, substantially as described.

15. In a clutch, the combination with a shaft, of a vsleeve fast on the shaft, a ring loosely mounted concentric with the sleeve, a'hub interposed between the ring and sleeve, a plurality of rollers carried by the hub, c'a'm .sur-

faces on the inner periphery of the ring contacting withthe rollers. abutments rigidly connected with the hub and lying outside the ring, and spring plungers interposed between the ring and abutments for producing a relative rotary movement of the ring and sleeve, substantially as described.

16. In a clutch, the combination with a shaft, of a sleeve fast on the shaft, a ring loosely mounted concentric with the sleeve, a pulley having a hub interposed between the. ring and slceve, a plurality of rollers carried by the hub, cam surfaces on the inner periphery of the ring contacting with the rollers, abutments formed on the pulley the ring and sleeve, and means for producing a positive,

outside the ring, and spring plungers interposed between the ring and abutments for producing a relative rotary movement of the ring and sleeve, substantially as described.

'17. In a clutch, the-combination with a shaft, of a sleeve fast on the shaft, 9. ring loosely mounted concentric .with the sleeve, a pulley having a hub provided with a. series of pockets extending therethrough and interposed between the ring and sleeve, a plurality of rollers mounted in the pockets, cam surfaces on the inner periphery of the ring contacting with the rollers, abutments formedon the pulley outside the ring, and spring plungers interposed between the ring and abutments for producing a relative rotary movement of the ring and sleeve, substantially as described.

18. In a clutch, the combination with a shaft, of a sleeve fast on the shaft, a ring loosely mounted concentric with the sleeve, a pulley having a hub provided with a series of pockets extending therethrough and interposed between the ring and sleeve, a plurality of rollers mounted in the pockets, cam surfaces on the inner periphery of the ring contacting with the rollers, abutments formed on the pulley outside the ring, spring plungers interposed between the ring and abutments for producing a relative rotary movement of the ring and sleeve, studs in the ring, rods having cam surfaces engaging the studs, and a. collar sliding on the shaft and engaging the rods to operate them to produce a positive reverse movement, substantially as described.

In testimony whereof, Ihave signed my name to this specification in' the presence of'tWo subscribing witnesses.

W/ERNER J. wAHLs'TRoM.

Witnesses:

J. D. H. BnnonN, SYDNEY I. Pmasco'r'r. 

